/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.genitus.drum.module

import com.codahale.metrics.MetricRegistry
import com.google.inject.{AbstractModule, Provides, Singleton}
import org.genitus.drum.conf.KafkaConf
import org.genitus.drum.service.{BuffService, KafkaClient, KafkaService}

/**
  * Guice glue code of application logic components.
  *
  * @author gwjiang (gwjiang@iflytek.com), 2017/3/6.
  */
class KafkaModule(val config: KafkaConf) extends AbstractModule {
  /**
    * @inheritdoc
    */
  override def configure(): Unit = {
    bind(classOf[KafkaConf]).toInstance(config)
  }

  /**
    * Provides KafkaService instance.
    *
    * @param consumer kafka client.
    * @return KafkaService instance.
    */
  @Singleton
  @Provides
  def provideKafkaService(consumer: KafkaClient): KafkaService = new KafkaService(consumer)

  /**
    * Provides KafkaClient instance.
    *
    * @param conf kafka conf.
    * @param buffService BuffService instance.
    * @return KafkaClient instance.
    */
  @Singleton
  @Provides
  def provideKafkaClient(conf: KafkaConf, buffService: BuffService,metricRegistry: MetricRegistry): KafkaClient =
    new KafkaClient(conf, buffService,metricRegistry)
}
